Pulley.



R. G. CARLE.

PULLEY.

APPLICATION FILED MAY 29. |916.

l LQL Patentedi Jau. 9, 19W.

75 51m ue Vl/foz R056??? Carga BBERT G. CABLE, F WOONSOCKET, RHODE XSLND.

PULIILEY.

Specification of Letters Patent.

Fatented Jan. Q), i911?.

Application filed may 29, 1916. Serial No. 100,607.

be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make `and use the same.

This invention relates to new and usetul improvements in pulleys, and more particularly-to that class of pulleys which are.

formed of disks and sections of sheet metal positioned on an axle to form a complete pulley, and the primary object of the invention is to provide a pulley of this character v especially adapted for use on textile spindle driving mechanism, although the pulley is capable of various uses. f f

Another object of this invention is to provide a pulley of this character which by the positioning of, a plurality of sheet metal disks on an axle forms thereby aI double grooved pulley that is very light, and will be practically selibalancing.

Another object of this invention is to provide a device of this character which is sirnple and durable in construction, inexpensive to manufacture, and one which will be very efhcient in operation.

' With these and numerous other objects in View, my invention consists of the novel features of construction, combination and arrangement ot1 parts which will be herein reerred to and more particularly pointed out in the specication and claims. v

lin the accompanying drawing: Figure 1 is aside elevation of my improved pulley; Fig. 2 is a transverse section taken on the line 2-2 of Fig. 1; and Fig. 3 is an edge view of the same.

ln describing my invention l shall refer to the drawings in which similar reference characters designate corresponding parts throughout the several views and in which the letter A designates my improved pulley, which has all of the members thereof except the axle 1 formed of a suitable, comparatively thin, sheet metal, such as steel, having a certain degree ot resiliency and adapted to be pressed into the desired shape. rlhe axle is of any desired material such as is best adapted for use on a device of this character, and the same has mounted thereon at a point on opposite sides ot its center a pairof sheet metal stiffening disks 2 and 3 which are mounted on the axle as at d.

The disks 2 and 3 are inclined outwardly in opposite directions from each other as shown at 5 adjacent their peripheries to orm shoulders thereon. y These shoulders 5 diverge outwardly from the disks and are both disposed at the same degree of inclination. rlhe outer edges of the disks 2 and 3 converge inwardly at equal angles to form pulley Hanges 6 and 7 and have their rims contacting on a plane transversely disposed through the center of the axle. rlhis construction is clearly shown in Fig. 2 of the drawings, and it will be obvious that the outer edges of the iianges 6 and 7 owing to the fact that they contact and come to a line,

slope so that their dat faces are adapted to lie flush with each other.

A pair of sheet metal side sections 8 and 9 are formed substantially disk-shaped, and have central holes 10, which are surrounded by inwardly projecting portions 11 which are adapted to have their edges positioned on the reduced ends 12 of the axle 1. `When these inclined edges are positioned on the reduced ends 12, the portions of said ends which project past the edges are then bent around the 'same so as to securely hold the sections 8 and 9 in contact with the axle, as clearly shown in Fig. 2 of the drawing. rlhe sections 8 and 9 are provided with outwardly projecting portions 13 which con verge inwardly toward each other, and terminate against the opposite shoulders 5 of the stiil'ening disks. provided with pulley langes 14: and 15, formed integrally therewith and diverging from each other at the same inclination as said shoulders and being guided in the direction of the same owing to the fact that their inner portions are ypositioned against said shoulders` The outer portions of the pulley flanges 14C/and 15 terminate in a single plane with the apex lof the pulley anges of the sti'ening disks.

ln' assembling the parts of this double grooved4 pulley weV are assuming that the stiiening disks 2 and 3 'are positioned onA the axle 1, the matter of completing the pulley is as follows; rll`he two side sections 8 and 9, each being of the shape above described, are positioned on the reduced ends 12 of the pulley, and the said ends are bent up around the contacting edges of the secrllhe sections are alsov formed thereby will by the addition of the stiening disks 2 and 3 form a very strong and durable pulley of this character. The contacting portions ofthe disks and side sections forms a very novel and efficient reinforcing means between the pulley flanges' between their inner ends. The stiifening disks 2 and 3 greatly reinforce the pulley and make the same a stronger and more durable device of this character, and much 4 better adapted to withstand the wear. The

double grooved pulleys are formed between the flanges 7 and 15, and 6 and 14 of the disks and side sections respectively.

As has been above stated, this type of pulley is especially adapted to spindle driving means for textile spinning, twisting and winding, or spooling machines. Owing to the fact that the pulley is formed of sheet metal, its weight is consequently greatly reduced, and furthermore it is practically selfbalanced. This pulley owing to its material reduction in weight as compared with cast metal pulleys,'iscapable of being actuated with less power, thereby greatly increasing its efliciency.

From the foregoing description, the construction and operation of my improved pulley, the manner of applying the same to use, and its operation will be readily under-d stood, and it will be seen that I have providedfal simple and elicient device of this character for carrying out the objects of the invention.

I claim:

1. A device of the class described comprising a central axle, a pair of sheet metal stiiening disks centrally mounted on said axle in spaced relation, said disks being inclined outwardly adjacent their peripheries to form shoulders thereon, and then converging inwardly at equal angles to form pulley flanges with their rims contacting, a

pair of sheet metal side sections having inwardly projecting inclined portions around the central openings secured in the ends of said axle, inwardly projecting converging portions on said sections terminating against the opposite shoulders on the stifl'ening disks, and said sections having integral pulley flanges diverging from each other at the same inclination as said shoulders, and the rims of the disks and anges being equidistant from the axis of the pulleys.

2. A device of the class described comprising a central axle, a pair of sheet metal disks centrally mounted on said axle in spaced relation, said disks being inclined outwardly adjacent their peripheries to form shoulders thereon and then converging inwardly to Jform pulley flanges, a pair of sheet metal side sections centrally mounted on said axle having inwardly projecting converging portions terminating against the shoulders of' the stiliening disks, and said sections having inte ral pulley flanges diverging from each ot er.

In testimony whereof l have hereunto set my hand in presence of two subscribing witnesses.

RoBERT of. CARLE. 

